02 



32. HUMATA. § 2. LEUC0STE6IA. 293 



LXXIX; C. Chr., Ind. Pil. ; Leucostegia immersa, Pr., Bedd., Handb. Ind. Ferns, 

 51; Acrophonts immersus, Moore, Bedd., Ferus S.I., tab. XI; — var. amplis- 

 sima, Christ, Ann. Btz., XV, 90; — var. minuta; — var. nana, Copel., Philipp. 

 Journ., I, Suppl., 147. 



Rhizome wride-creeping, clothed with lanceolate, ferrugineous fibrils. Stipes 

 ^. 10-30 c.M. long, firm, erect, naked. Fronds 30—45 c.M. long, 15—25 



-g c.M. broad, triangular, 3-pinnate. Lowest pinnulae lanceolate-ti'iangular, 5—8 

 I' c.M. long, with the ultimate divisions rhomboidal, the | base obliquely cuneate, 

 ■^ the upper side broader than the lower one, the edge lobed, with the 

 p lobes rounded and crenate above. Texture herbaceous or flaccido-coriaceous ; 



® surfaces naked. Sori commonly large, imoiersed, ^ prominent on the upper 



5° sttrface, 1 — 6 to a leaflet; indusium broader than long, the outher edge 



semiorbicular, the base straight. 



Var. ain|»lijSSima : Fronds lanceolate, to 75 c.M. long; indusium 

 reniform. 



Var. minuta: Fronds small, to 10 c.M. long, to 5 c.M. broad. Sti- 

 pes slender. 



Var. nana: Stipes 5 — 10 c.M. long, filiform; fronds 5 — 10 c.M. long, 

 2-pinnate; pinnae obtuse; pinnulae rounded. 



Philippines, Java, Malacca; Br. India; — var. amplissima: Celebes; — 

 var. minuta: Timor (Forbes, no. 3522); — var. nana: Luzon. 



(19) H. Hosei, V. A. t). B,.; Davallia Hosei, Bk., Journ. of Bot., 

 XXVI, 523; C. Chr., Ind. Fil. 



Rhizome creeping, the scales minute, ad pressed, linear, brown. Stipes 

 naked, brownish, 30 — 40 c.M. long. Fronds lanceolate-oblong, 2-pinnate, 

 45 — 60 c.M. long, 12 — 15 c.M. "broad. Pinnae distant, lanceolate, erecto-patent, 

 2 — 2'/2 c.M. broad, cut down to the rachis into unequal-sided, lanceolate- 

 oblong, deeply crenate pinnulae + 4 — 5 m.M. broad, with the upper base 

 produced and the lower cut away. Texture firm ; surfaces naked ; veins 

 indistinct, 1 to each lobule. Sori small, 1 at the base of each lobule; indu- 

 sium rigid, naked, as broad as long. 



Borneo. 



* (20) H. hymen ophylloides, Copel., Polypod. Philipp., 51; 

 Davallia affims, Hk., Rac, Flor. Btz., 1, 129; Hk., Spec. Fil, I, tab. LII, B; 

 D. hymenophylloides, Kuhn, Ann. Mus. Bot. L.B., IV, 286; (not Bl.), Christ, 

 Parnkr. d. Erde, fig. 957 ; C. Chr., Ind. Fil. ; Acrophorm affinis, Moore, Bedd., 



